Internal combustion engine knocking sensor arrangement

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the temperature sensing element is a thermo couple (16, 17);
• the cylinder head seal includes
• a metal liner (15);
• and the thermo couple is secured to the wall surface (12) of the metal liner (15) facing the combustion chamber and flush therewith.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the temperature sensing element is a thermo couple (16, 17);
• the cylinder head seal includes
• a cylinder head gasket having a metal facing or liner (15, 110), said metal facing or liner forming one element of the thermo couple.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• an an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the sensing element comprises an electrical resistance wire element (18) having a temperature coefficient of resistance other than unity, secured to the cylinder head seal, in thermal sensing relation to the cylinder head wall and is positioned adjacent the edge of the cylinder head seal which faces the cylinder head wall at the side of the combustion chamber.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the temperature sensing element comprises a capillary tube enclosing a temperature sensitive liquid, the capillary tube surrounding the combustion chamber (11) in ring form.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the cylinder head seal (10) includes a solid gasket element (10) and a hollow metal facing or liner (15) surrounding, with clearance space, the edge of the solid gasket element;
• and said temperature sensing element (16, 17;
• 18;
• 20, 21) is located within said clearance space.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the cylinder head seal (10) includes a solid gasket element (10) and a metal facing or liner;
• and said temperature sensing element is positioned in temperature sensing relationship with said liner at a region thereof remote from the wall surface (12) of said liner facing the combustion chamber of the at least one cylinder.

For combination with an internal combustion engine having at least one cylinder defining a combustion chamber and a cylinder head seal, sealing the cylinder head,

• an engine knock sensor having
• a temperature sensing element located in the wall of the at least one cylinder, and providing an output signal representative of temperature at, or in the vicinity of the engine cylinder wall;
• connection means connected to the sensing element and conducting said output signal externally of the cylinder;
• and an evaluation stage (E, E') connected to said connection means and responsive to and controlled by the output signal and providing an indication when the temperature of the cylinder wall exceeds a predetermined limit,
• wherein the cylinder head seal (10) includes a gasket element (10);
• and the temperature sensing element is embedded within said gasket element in a region in the vicinity of the combustion chamber of the at least one cylinder.